Improvement in marine clocks



vV.GIROUD.

Marine Clock.

Patented Nov.v 3, 1863.

UNITED STATES PATENT OFFICE.o

VICTOR GIROUD, OF NEW YORK, N. Y.

IMPROVEMENT IN MARINE CLOCKS.

Specification forming part of Letters Patent No. 40,474, dated November f3, 1563.

To all whom it may concern: y

Be it known that I, Vieron GIEoUD, ofthe city, county, and State of New York, have invented certain new and useful Improvements in Marine Clocks; and I do herebydeclare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specication, in which- Figure l is a vertical section parallel with the dial ofa clock with my improvements. Fig. 2 is a central horizontal section of the same, showing the case open.

Similar letters of reference indicate Corresponding parts in both figures.

My invention is more especially designed for clocks to be used in the engineers rooms of steam vessels.

One object is to provide for the winding and the daily setting of the hands, which is necessary at sea,without the greasing and soilv ing of the dial and inside of the glass,which is almost unavoidable when the winding and setting are performed in front of the dial in the usual way. Another object is to obviate the difficulty which sometimes arises at sea from the loss of the ordinary winding-key, which is difficult to keepin place; and a third object is to avoid the bending or straining of the hands, which so often occurs in setting the clock by taking hold of the hands theinselves.

The invention consists in certain improved means of winding and setting the hands, applied in combination with a hinged dial, whereby the above results are obtained.

To enable others skilled in the art to make and use my invention, Iwill proceed to describe its construction and operation.

A is the case, having the dial B and the ring O, which holds the glass D, separately hinged to-it by a single hinge, E, as shown in Fig. 2.

Fis a fastening for securing the dial and glass ring together, so that both may move together on the hinge E.

P is a spring-catch for securing both the ringand the dial when closed up.

G is a box which contains the works of the clock secured firmly by screws c a to a frame, J, which is rmly secured by screws b b to the back of the dial B.

c is the shaft on which the mainspring is wound, having fast upon it a ratchet-wheel, H, to which is applied a stop-pawl, d.

I is`a lever, fitted to work loosely on the shaft c as a fulcrum, and carrying a pawl, c, which is kept in contact with the ratchetwheel H by means of a spring, f, also attached to the lever I. This lever protrudes through an opening in the lower part of the frame, and is furnished at its extremity with a handle, g, which can be conveniently taken hold of when the dial is opened,for the purpose of giving the lever an oscillating movement upon the shaft c, and thereby making its pawl c operate on the ratchet-wheel H in such manner as to turn the said shaft and wind up the spring.

7L ij k are the pinions and wheels commonly used in transmitting mot-ion from the sleeve which carries the minute-hand q to the sleeve which carries the hour-hand r of the clock.

Z is a pinion gearing with the wheel 7c, and

.attached to a spindle, m, which extends tnrough the box G, and which works in bearings in the back and front thereof. This spindle has a knob, m', at its rear end, by which to turn it and the pinion by hand for the purpose of turning the wheel k, and thereby turning both hands of the clock withont opening the glass D, which covers the dial and the hands.

To wind and set the clock it is only necessary to press back the spring-catch p and open the glass ring 0,'which by its movement on the hinge E brings with it both the dial and the works without uncovering the face of the dial, and when the works are thus exposed the winding is effected by moving the lever I back and forth on the shaft c, and the setting by turning the knob m.

/Vhat I claim as my invention,and desire to secure by Letters Patent, is-

l. rIhe pawl-lever I, pawl c, and ratchet wheel H, applied to the winding-shaft c, and in combination with a hinged dial to which the works are attached, substantially as herein described.

2. rllhe spindle m, pinion Z, and knob m, applied in combination with the Ocaring of the hands and with the hinged dial, substantially as and for the purpose herein specified.

Y. GIROUD.

Witnesses:

Tnos. S. J .`DoUGLAs, GEO. W. REED. 

